258 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
Anous pullus,! sp. nov. 
Type. — Mus. Comp. Zodl., No. 37,298. 
Two specimens, an adult ¢ and an adult 9, from a small rocky island near 
Iriomote, June 10. [Eggs, one in a clutch, laid on the bare rock, were taken 
July 1.] 
Characters. — A large very dark brown .noddy with a gray crown, nearest to 
A. rousseaut Hartl. of Madagascar and adjacent islands, from which it differs 
by being much darker in color and slightly smaller in size. 
Color. — Adults, in unworn, full breeding plumage. Narrow superciliary 
streak, ending above eye, lower eyelid, and a spot on upper eyelid whitish ; 
forehead pearl gray, this color extending over crown and gradually darkening 
to slate gray on occiput, and thence merging on hind neck into the brown 
of upper parts; lores and region above the eye below the whitish streak black; 
upper parts rich dark chocolate brown, with a slight grayish cast; primaries 
and rectrices dark blackish brown; chin and sides of head blackish slate ; rest 
of under parts deep chocolate brown ; lining of wing brownish slate ; bill, in 
dried specimens, black ; feet and toes reddish brown. 
Measurements : — 
No. Sex. Wing. Tail. Tarsus. Culmen. 
37,297 3 Topotype. 273 164.5 25. 39. 
37,298 9 Type. 271 159.5 24.5 38. 
Remarks. — A comparison of the two specimens upon which I base this new 
noddy with the material in the National Museum and the Museum of Com- 
parative Zodlogy shows them to be much nearer to A. rousseaut than to any 
of the other forms. The comparison was made with skins of A. rousseaut 
from the Seychelles and Mauritius. The Liu Kiu birds are much darker in 
color throughout, especially so about chin, sides of neck, and breast, and_ they 
are also smaller, the wing of the Mauritius specimen being 285 mm. long, and I 
have no hesitation in proposing a name for the Liu Kiu noddy. 
Compared with other noddies, the differences are still greater ; thus the Liu 
Kiu form is much darker than A. ridgwayi Anthony from Socorro and Tres 
Marias, especially about sides of head and throat, and the crown is darker and 
grayer. 
From A. galapagensis Sharpe the new species differs in not having so black 
a body or such a dark gray crown. 
From the noddy of eastern America —true A. stolidus —the Liu Kiu bird 
is very distinct, and can at once be told by its larger size and gray crown and 
forehead, the forehead and most of the crown in A. stolidus being white or 
yellowish white. 
A. pullus differs much from the small slender-billed species, A. leucocapillus, 
A. hawaiiensis, and A. tenuirostris, in being larger and having a stouter bill. 
1 Pullus, dark-colored, dusky. 
